【正文】 ..................................................................................... 5 穩(wěn)壓電源電路的設計 .................................................................................................................................. 5 采樣電路的設計 ........................................................................................................................................... 6 漏電檢測電路設計 ...................................................................................................................................... 7 放大電路的設計 ........................................................................................................................................... 8 報警電路的設計 ........................................................................................................................................... 9 三、程序設計 ................................................................................................................................................................ 9 四、測試方案與測試結果 ............................................................................................................................................. 10 測試儀器 ....................................................................................................................................................... 10 指標測試和測試數(shù)據(jù) ................................................................................................................................ 11 輸出電壓范圍測試結果如表 1： ........................................................................................................ 11 電壓調整率測試結果如表 2： ............................................................................................................ 11 負載調整率測試結果如表 3： ............................................................................................................ 11 過流保護： .............................................................................................................................................. 11 系統(tǒng)對題目的完成情況： ....................................................................................................................... 12 結果分析： ................................................................................................................................................. 12 五、結論 ..................................................................................................................................................................... 12 參考文獻： ......................................................................................................................................................... 13 1 一、系統(tǒng)方案設計 設計要求 基本要求 設計一臺額定電壓為 5V，額定輸出電流為 1A 的直流穩(wěn)壓電源。電壓調整率 SU≤1%。電源部分由及相關電路組成，為整個系統(tǒng)正常穩(wěn)定地工作提供穩(wěn)定的電壓。當穩(wěn)壓管溫度過高時，穩(wěn)壓性能將變差，甚至損壞。電壓檢測由三相交流變壓器、整流濾波電路和分壓電路組成。當輸入高電平時，晶體管飽和導通，繼電器線圈通電，觸點吸合。 當 51 單片機引腳輸出高電平時， PNP 三極管 2N3906 截止，繼電器線圈兩端沒有電位差，繼電器銜鐵釋放，繼電器的常開觸點釋放，相當于開關斷開。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it. If you are worried about how the time limits apply to you, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement w